Gas Compression Overdrive
An internal weapon mod which compresses and directs gasses used for cycling the weapon to the barrel, effectively increasing projectile velocity and damage at the expense of cycle rate.
The Gas Compression Overdrive is an internal weapon mod in Rust that fits 10 weapons. It raises damage by 20%, speeds projectiles up by 30% and moves damage falloff 20% further out, but adds 10% to recoil and lengthens the delay between shots by 20%. You craft it at a Level 2 Workbench, and its blueprint costs 100 scrap to research.
About the Gas Compression Overdrive
The 10 weapons that take it are the Custom SMG, Handmade SMG, M15 Semi-Automatic Pistol, M39 Rifle, M92 Pistol, SKS, Semi-Automatic Pistol, Semi-Automatic Rifle, Thompson and Uzi. A delay 20% longer between shots works out to 17% fewer shots per minute.
On the tech tree it sits behind 20 other unlocks: Holosight, Semi-Automatic Rifle, Propane Explosive Bomb, Smoke Grenade, Custom SMG, Muzzle Boost and 14 more. In all, 23 loot sources drop it; the full list of where it drops gives the chance for each.
Gas Compression Overdrive stats and effects
It takes the weapon's internal slot, and a weapon carries only one internal mod at a time. Its percentage changes multiply with those of the other attachments on the same weapon.
How to craft the Gas Compression Overdrive
Crafting one takes 25 seconds at a Level 2 Workbench and costs 10 × High Quality Metal.
10 
How to get the Gas Compression Overdrive blueprint
Research it for 100 scrap, or unlock it on the Level 2 tech tree for 21 Blueprint Pages in total.
1 Item 
100 Scrap Blueprint 100 
Node 
1 Blueprint Page Unlocked 21 How to repair the Gas Compression Overdrive
A full repair at a Repair Bench costs 3 × High Quality Metal, and you need its blueprint.
×3 
What the Gas Compression Overdrive recycles into
A green recycler always gives back 5 × High Quality Metal for one.
×5 ×6 
×7 50% 
×4 Where to find the Gas Compression Overdrive
Treasure Box has the best chance at 1.6%, followed by Locked Crate at 1.3% and Elite Crate at 0.78%.
Stats checked against the Rust game files on 13 November 2026.
